DNS Alias Problems

[bouchey <bouchey@xxxxxxxxxx>]

Hi to all,
Trying to Alias an old domain name on a new server and cannot get email
in from the old address.
Any responses please respond to bouchey@pentelco.net. Thanks

Can get mail in on the main Domain Name bouchey@pentelco.net, but old
address that we are trying to alias, bouchey@pentel.net, gives these
errors
Here's the MAILLOG stuff:

Nov  4 16:16:30 pentelco sendmail[870]: QAA00870:
from=<jay@carrinter.net>,
size=630, class=0, pri=30630, nrcpts=1,
msgid=<NDBBLLOLGLGEMJGAGHDHAEJNCCAA.jay@carrinter.net>, proto=ESMTP,
relay=IDENT:root@inside.carrdata.net [206.150.112.58]
Nov  4 16:16:30 pentelco sendmail[872]: QAA00870: SYSERR(root): MX list
for
pentel.net. points back to pentelco.net
Nov  4 16:16:30 pentelco sendmail[872]: QAA00870: to=<jay@pentel.net>,
delay=00:00:01, xdelay=00:00:00, mailer=esmtp, relay=pentel.net.,
stat=Local
configuration error
Nov  4 16:16:30 pentelco sendmail[872]: QAA00870: QAA00872: DSN: Local
configuration error

Here's the message kicked back:
The original message was received at Thu, 4 Nov 1999 17:00:21 -0500
from IDENT:root@inside.carrdata.net [206.150.112.58]

   ----- The following addresses had permanent fatal errors -----
<bouchey@pentel.net>

   ----- Transcript of session follows -----
553 mail.pentel.net. config error: mail loops back to me (MX problem?)
554 <bouchey@pentel.net>... Local configuration error